2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89273We introduce a new notion of consistency for 2-events quantum histories, based on the concept of mirror projection. Contrary to all notions of consistency so far introduced, our consistency, named self-decoherence, is an individual property, i.e., it can be attributed to every single sample of the physical system. Furthermore, self-decoherence forbids contrary inferences.12 pages, gnistico@unical.itQuantum Physicstext